Christina Wedin

Everything ages and some products need to retain their properties longer to live up to their area of ​​use. To be competitive, age resistance needs to be measured as a quality measure for a high-quality product.

In the production of sulphate pulp, black liquor is formed as a residual product. It contains the consumed cooking chemicals and wood substances.

The amount of materials and chemicals in the white water system in paper production is important from both process optimization, resource management and economic aspects.

To develop, optimize the pulp process, testing and characterization of the pulp is important. Partly to know which properties are affected when process conditions change.

Dots and other types of microsamples can be difficult to analyze chemically due to their small size and small amounts of material. We have solved this problem by micro-extracting very small samples for further analysis with, for e…

TOC instruments that can, in addition to total organic or inorganic carbon in solutions, also measure total nitrogen. By, for example, analyzing total nitrogen in the bio - treatment's incoming and outgoing streams, you get i…

Separation of green liquor sludge from green liquor acts as the kidney of the chemical pulp processes. As the pulp processes are increasingly closed, the importance of following how and if the composition of the sludge changes to …

It is possible to measure viscosity with a temperature-controlled bath to determine the relationship between different temperatures and corresponding viscosity values. For some applications, the effect of temperature on the viscos…

RISE specializes in analyzes of forest industry samples. Solid samples such as wood chips, pulp or liquid form such as black liquor.

Stone cells, can occur in pulp containing aspen or spruce, which causes wear on process equipment. Stains and spores can cause defects in end products in cellulose products.

Process control in the cellulose industry is necessary to reduce driveability problems and to analyze carbohydrates and anions, for example oxalate, chloride, sulphite, sulphate and thiosulphate ions, can provide an increased know…

Separating and purifying various chemical liquids such as cooking liquids, yeast tanks and black liquor is important in traditional forest industry process liquids and materials, as well as in the biorefinery area.

It is not only us humans who are affected by the fluctuations in the climate, but also the properties of paper and cardboard. After a summer with extreme fluctuations in both temperature and humidity, it has been extra important w…

Rosin, a collective name for resin acids, is found naturally in extractives from pine, spruce and larch trees and therefore ends up to a very large extent in the tall oil after cooking. Allergies to rosin are present and we can id…

Anthraquinone consists of yellow acicular crystals and is a form of dispersion used in the cooking of sulphate pulp to improve yield. To get a consistent quality of the process, it is important to know the exact amount of anthraqu…

Materials and processes need to identify their products. Using gas chromatography-mass spectrometry facilitates the work and it is often used in connection with problem solving and environmental issues. The instrument is very usef…

Chemicals that come out of the process need to be analyzed, checked and classified in order to know what measures need to be taken during any post-processing. Suggestions for common analyzes for process chemicals can be found belo…

When you buy new chemicals, it can be good to know that the new one is as good as the old chemical. We can help you analyze a number of chemicals.

Test comparisons are valuable as a quality measure for laboratories. The comparison can be between instruments and methods. Here you get a good forum for discussions to raise awareness about the important role of the laboratory.

RISE can characterize pulp, carboxymethylcellulose, polyacrylate, starch, biocides, lignin, black liquor, hemicellulose.